System information transmission method and device

ABSTRACT

A system information transmission method and device. The system information transmission method comprises: generating, by a first communication node, first system information indicative of indication information corresponding to second system information, wherein the second system information is used to assist a second communication node to access a system; transmitting to the second communication node the first system information; receiving, by the second communication node, the first system information transmitted from the first communication node; receiving, according to the indication information in the first system information, the second system information; and accessing, according to the second system information, the system.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.16/075,302, filed on Aug. 3, 2018, which is a National stageapplication, filed under 37 U.S.C. 371, of and claims the benefit ofInternational Patent Application No. PCT/CN2017/072056, filed on Jan.22, 2017, which is based on and claims priority to Chinese patentapplication No. 201610075946.3, filed on Feb. 3, 2016. The entirecontents of the before-mentioned patent applications are incorporated byreference as part of the disclosure of this application.

TECHNICAL FIELD

The disclosure relates, but is not limited, to the field of mobilecommunication techniques.

BACKGROUND

In a long term evolution (LTE) system, before accessing a cell, userequipment (UE) needs to first acquire system information of the cell toknow how the cell is configured, so as to work correctly in the cell.The cell sends, through a broadcast control channel (BCCH) as a logicalchannel, system information to all the UE in the cell. The BCCH as thelogical channel is mapped to a broadcast channel (BCH) as a transportchannel and a downlink share channel (DL-SCH) as a transport channel.The BCH is only used for transmitting master information block (MIB)information, and is mapped to a physical broadcast channel (PBCH). TheDL-SCH is used for transmitting various system information block (SIB)information, and is mapped to a physical downlink shared channel (PDSCH)as a physical channel. The PBCH of the LTE is used for one transmissionevery 10 ms, so an overhead is high and flexibility is poor.

The UE may acquire the following information by detecting the PBCH.

(1) A downlink system bandwidth of the cell, a physical hybrid automaticrepeat request indicator channel (PHICH) configuration, and a systemframe number (SFN) may be known through the received MIB.

(2) The number of cell-specific antenna ports, which is 1, 2, or 4.

(3) A transmit-diversity scheme which is used for an L1/L2 controlsignal, and the transmit-diversity scheme includes a physical controlformat indicator channel (PCFICH), the PHICH, and a physical downlinkcontrol channel (PDCCH). Both the PBCH and the L1/L2 control signal mayonly use a single antenna transmission or transmission diversity. If thetransmission diversity is used, the PBCH and the L1/L2 control signaluse the same multiple antenna transmit-diversity scheme.

With the rise of intelligent terminals and the richness of wireless dataapplication services, the number of data users in a wirelesscommunication system has increased significantly, and data contents areno longer limited to texts or images in the related art. In future,users have increasing demands on multimedia services including highdefinition videos and mobile TV and the like, which causes an explosivegrowth of wireless network traffic. According to a forecast made by amarket institute, in the next ten years, wireless data services willincrease by 500-1000 times with average annual increase of 1.6-2 times,which has a higher requirement on network capacity of the wirelesscommunication system.

Facing 2020 and the future, services of the mobile internet and theinternet of things will become a key driving force for the developmentof mobile communications. A 5th Generation (5G) Mobile Communicationwill meet diverse service requirements of people on various areas, suchas residence, work, leisure and transportation. Even in scenarios ofdense residential areas, offices, stadiums, open-air gatherings,subways, expressways, high-speed trains, wide-area coverage and the likewhich have characteristics of ultrahigh traffic density, ultrahighconnection density and ultrahigh mobility, the 5G may also provide theusers with extreme service experiences including ultra-high definitionvideos, virtual reality, augmented reality, cloud desktops, onlinegames. Moreover, the 5G will permeate into the internet of things andvarious industry domains, and deeply integrate with industrialfacilities, medical instruments, vehicles and the like, therebyeffectively satisfying the diverse service requirements of verticalindustries including industry, medical treatment, transportation and thelike, and achieving real “internet of everything”.

The 5G will solve challenges brought by differential performance indexesin diverse application scenarios. Performance challenges that differentapplication scenarios face are different, User experience rate, trafficdensity, delay, energy efficiency and the number of connections all maybecome challenge indexes in different scenarios. Four main technicalscenarios in the 5G, including continuous wide area coverage, highcapacity of hotspot, low power consumption and large connection, and lowdelay and high reliability, may be summarized from the main applicationscenarios, service requirements and challenges of the mobile internetand the internet of things.

There are multiple manners for satisfying the requirements in the 5G,which mainly include that improving a spectral efficiency, increasing anetwork density, increasing a system bandwidth, intelligent serviceoffload, reducing a system broadcast control overhead and the like.Reducing the system broadcast control overhead needs to flexibly adaptto different service requirements in the 5G and to meet “forwardcompatibility” consideration of a system design, if a mechanism relatedto the LTE is still adopted, the requirement may not be satisfied.

SUMMARY

The following is a summary of the subject matter elaborated in thedisclosure. The summary is not intended to limit the scope of protectionof the claims.

The disclosure provides a system information transmission method anddevice, so as to solve the problem of large overhead and poorcompatibility in the related art.

A method for sending system information, the method is applied to afirst communication node, and the method includes that first systeminformation is generated, the first system information is indicative ofindication information corresponding to second system information, andthe second system information is used for assisting a secondcommunication node to access a system; and the first system informationis sent to the second communication node.

Optionally, the indication information includes at least one of thefollowings: whether the second system information is information sent ona carrier frequency of the first system information; period informationof the second system information; update indication information of thesecond system information; carrier frequency information used forsending the second system information; time at which the second systeminformation is sent; a frequency-domain resource used for sending thesecond system information; a time-domain resource used for sending thesecond system information; a data format of the second systeminformation; a frequency-domain subcarrier spacing used for sending thesecond system information; a waveform used for sending the second systeminformation; or correspondences between the first system information andthe second system information.

Optionally, the first system information includes a transmission periodof the first system information.

Optionally, a transmission period of the first system information isless than a transmission period of the second system information.

Optionally, the second system information includes at least one of thefollowings: one or more types, a transmission period of the secondsystem information, a transmission period of the first systeminformation on one or more carrier frequencies, information of one ormore sets of access parameters, or communication carrier frequencyinformation of the second system information.

A method for receiving system information, the method is applied to asecond communication node, and the method includes that first systeminformation sent by a first communication node is received; secondsystem information is received according to indication information ofthe first system information; and a system is accessed according to thesecond system information.

Optionally, the system is accessed according to the second systeminformation includes that a parameter for accessing the system isdetermined from the second system information according to a type of thesecond communication node, and the system is accessed according to theparameter; or a set of access parameters for accessing the system isdetermined from the second system information according to a type of thesecond communication node, and the system is accessed according to theset of access parameters.

Optionally, the indication information includes at least one of thefollowings: whether the second system information is information sent ona carrier frequency of the first system information; period informationof the second system information; update indication information of thesecond system information; carrier frequency information used forsending the second system information; time at which the second systeminformation is sent; a frequency-domain resource used for sending thesecond system information; a time-domain resource used for sending thesecond system information; a data format of the second systeminformation; a frequency-domain subcarrier spacing used for sending thesecond system information; a waveform used for sending the second systeminformation; or correspondences between the first system information andthe second system information.

Optionally, the method further includes that after the first systeminformation sent by the first communication node is received, atransmission period of the first system information is determinedaccording to a time interval at which the first system information issuccessfully received.

A device for sending system information, the device is applied to afirst communication node, and the device includes that a generatingmodule, configured to generate first system information, the firstsystem information is indicative of the indication informationcorresponding to second system information, and the second systeminformation is used for assisting a second communication node to accessa system; and a communication module, configured to send the firstsystem information generated by the generating module to the secondcommunication node.

A device for receiving system information, the device is applied to asecond communication node, and the device includes that a firstreceiving module, configured to receive first system information sent bya first communication node; a second receiving module, configured toreceive second system information according to indication information ofthe first system information received by the first receiving module; andan accessing module, configured to access a system according to thesecond system information received by the second receiving module.

Optionally, the accessing module includes at least one of a parameterunit or a set unit. The parameter unit is configured to determine, fromthe second system information, a parameter for accessing the systemaccording to a type of the second communication node, and access thesystem according to the parameter. The set unit is configured todetermine, from the second system information, a set of accessparameters for accessing the system according to a type of the secondcommunication node, and access the system according to the set of accessparameters.

Optionally, the device further includes a determining module, configuredto determine a transmission period of the first system informationaccording to a time interval at which the first system information issuccessfully received by the first receiving module.

In the system information transmission method and device according toembodiments of the disclosure, a first communication node generatesfirst system information, and sends the first system information to asecond communication node; after receiving the first system information,the second communication node receives second system informationaccording to indication information of the first system information; andthe second communication node accesses a system according to the secondsystem information. The technical solutions according to the embodimentsof the disclosure may reduce a system broadcast control overhead toflexibly adapt to requirements on different services in the 5G, and meet“forward compatibility” of a system design, thereby having goodadaptability to different services.

Other aspects will be apparent after the accompanying drawings anddetailed descriptions are read and understood.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a flowchart of a method for sending system informationaccording to an embodiment of the disclosure.

FIG. 2 is a flowchart of a method for receiving system informationaccording to an embodiment of the disclosure.

FIG. 3 is a structure diagram of a device for sending system informationaccording to an embodiment of the disclosure.

FIG. 4 is a structure diagram of a device for receiving systeminformation according to an embodiment of the disclosure.

FIG. 5 is a structure diagram of another device for receiving systeminformation according to an embodiment of the disclosure.

FIG. 6 is a schematic diagram of a relationship between the first systeminformation and the second system information in the method for sendingsystem information according to an embodiment of the disclosure.

FIG. 7 is a schematic diagram of a relationship between the first systeminformation and the second system information in the method for sendingsystem information according to an embodiment of the disclosure.

FIG. 8 is a schematic diagram of a relationship between the first systeminformation and the second system information in the method for sendingsystem information according to an embodiment of the disclosure.

FIG. 9 is a schematic diagram of a relationship between the first systeminformation and the second system information in the method for sendingsystem information according to an embodiment of the disclosure.

FIG. 10 is a schematic diagram of sending of the first systeminformation in the method for sending system information according to anembodiment of the disclosure.

FIG. 11 is a schematic diagram of a relationship between the firstsystem information and the second system information in the method forsending system information according to an embodiment of the disclosure.

FIG. 12 is a schematic diagram of a relationship between the firstsystem information and the second system information in the method forsending system information according to an embodiment of the disclosure.

FIG. 13 is a schematic diagram of a relationship between the firstsystem information and the second system information in the method forsending system information according to an embodiment of the disclosure.

DETAILED DESCRIPTION

Embodiments of the disclosure are elaborated below in combination withthe accompanying drawings. It should be noted that the embodiments andthe features in the embodiments of the disclosure can be arbitrarilycombined with each other under the condition of no conflicts.

The operations illustrated in the flowcharts of the accompanyingdrawings may be executed in a computer system in accordance with a setof computer executable instructions. Moreover, although a logicalsequence is illustrated in the flowcharts, in some cases, theillustrated or described operations can be performed in a sequencedifferent from that described here.

FIG. 1 illustrates a flowchart of a method for sending systeminformation according to an embodiment of the disclosure. The methodaccording to the embodiment is applied to a first communication node,and may include the following operation S110-S120.

At S110, first system information is generated, the first systeminformation is indicative of indication information corresponding tosecond system information, and the second system information is used forassisting a second communication node to access a system.

At S120, the first system information is sent to the secondcommunication node.

In the embodiment of the disclosure, the first communication node sendsthe first system information to the second communication node.Optionally, the second system information may be sent by the firstcommunication node or other communication nodes. For example, in aheterogeneous network, a macro base station sends the second systeminformation and a micro base station only sends the first systeminformation; or the macro base station sends the first systeminformation and the second system information, the micro base stationsends the first system information, and the first system informationsent by different base stations may be different.

Optionally, in the embodiment of the disclosure, the first systeminformation may be a synchronization signal, the synchronization signalcarries different information combinations according to differentsynchronization sequences and/or resource mapping manners; or the firstsystem information may also be a reference signal, the reference signalcarries different information combinations according to differentsequences and/or resource mapping manners. The first system informationmay be sent to the second communication node through a downlink channelof at least one of a 5G system, an LTE system, a wideband code divisionmultiple access (WCDMA) system, a global system for mobile communication(GSM) system, or a system adopting the standard 802.11. The secondsystem information may be sent to the second communication node throughthe downlink channel of at least one of the 5G system, the LTE system,the WCDMA system, the GSM system, or the system adopting the standard802.11.

Optionally, in the embodiment of the disclosure, the indicationinformation corresponding to the second system information may includeat least one of the followings: whether the second system information isinformation sent on a carrier frequency of the first system information;period information of the second system information; update indicationinformation of the second system information; carrier frequencyinformation used for sending the second system information; time atwhich the second system information is sent; a frequency-domain resourceused for sending the second system information; a time-domain resourceused for sending the second system information; a data format of thesecond system information; a frequency-domain subcarrier spacing usedfor sending the second system information; a waveform used for sendingthe second system information; or correspondences between the firstsystem information and the second system information.

Optionally, in the embodiment of the disclosure, the first systeminformation may include a transmission period of the first systeminformation.

Optionally, in the embodiment of the disclosure, a transmission periodof the first system information is less than a transmission period ofthe second system information.

Optionally, in the embodiment of the disclosure, a transmission periodof the first system information may be configured.

Optionally, in the embodiment of the disclosure, the number of bits ofthe second system information is greater than the number of bits of thefirst system information.

Optionally, in the embodiment of the disclosure, the second systeminformation includes at least one of the followings: one or more types,a transmission period of the second system information, a transmissionperiod of the first system information on one or more carrierfrequencies, information of one or more sets of access parameters, orcommunication carrier frequency information of the second systeminformation.

In the embodiment of the disclosure, the second communication node mayselect, according to a type of the second communication node, the secondsystem information applicable to the second communication node, so as toaccess the first communication node.

FIG. 2 illustrates a flowchart of a method for receiving systeminformation according to an embodiment of the disclosure. The methodaccording to the embodiment of the disclosure is applied to a secondcommunication node, and may include the following operations S210-S230.

At S210, first system information sent by a first communication node isreceived.

At S220, second system information sent by the first communication nodeis received according to indication information of the first systeminformation.

At S230, a system is accessed according to the second systeminformation.

Optionally, in the embodiment of the disclosure, an implementation ofaccessing the system according to the second system information mayinclude that a parameter for accessing the system is determined from thesecond system information according to a type of the secondcommunication node, and the system is accessed according to theparameter; or a set of access parameters for accessing the system isdetermined from the second system information according to a type of thesecond communication node, and the system is accessed according to theset of access parameters.

Optionally, in the embodiment of the disclosure, the indicationinformation includes at least one of the followings: whether the secondsystem information is information sent on a carrier frequency of thefirst system information; period information of the second systeminformation; update indication information of the second systeminformation; carrier frequency information used for sending the secondsystem information; time at which the second system information is sent;a frequency-domain resource used for sending the second systeminformation; a time-domain resource used for sending the second systeminformation; a data format of the second system information; afrequency-domain subcarrier spacing used for sending the second systeminformation; a waveform used for sending the second system information;or correspondences between the first system information and the secondsystem information.

The indication information in the embodiment of the disclosure may becarried explicitly or implicitly. For example, the indicationinformation is implicitly determined according to a transmission periodof the first system information, a format of the first systeminformation, and so on.

Optionally, after S210, the method according to the embodiment of thedisclosure may also include that a transmission period of the firstsystem information is determined according to a time interval at whichthe first system information is successfully received.

In the embodiment of the disclosure, after the second communication nodedetermines the transmission period of the first system information, thesecond communication node may periodically receive the first systeminformation.

FIG. 3 illustrates a structure diagram of a device for sending systeminformation according to an embodiment of the disclosure. The deviceaccording to the embodiment of the disclosure is applied to a firstcommunication node, and may include a generating module 11 and acommunication module 12.

The generating module 11 is configured to generate first systeminformation, the first system information is indicative of indicationinformation corresponding to second system information, and the secondsystem information is used for assisting a second communication node toaccess a system.

The communication module 12 is configured to send the first systeminformation generated by the generating module 11 to the secondcommunication node.

FIG. 4 illustrates a structure diagram of a device for receiving systeminformation according to an embodiment of the disclosure. The deviceaccording to the embodiment of the disclosure is applied to a secondcommunication node, and may include a first receiving module 21, asecond receiving module 22 and an accessing module 23.

The first receiving module 21 is configured to receive first systeminformation sent by a first communication node.

The second receiving module 22 is configured to receive second systeminformation according to indication information of the first systeminformation received by the first receiving module 21.

The accessing module 23 is configured to access a system according tothe second system information received by the second receiving module22.

Optionally, FIG. 5 is a structure diagram of another device forreceiving system information according to an embodiment of thedisclosure. Based on the structure of the device illustrated in FIG. 4 ,the accessing module 23 may include at least one of a parameter unit 231or a set unit 232. FIG. 5 is illustrated by taking that the accessingmodule 23 includes the parameter unit 231 and the set unit 232 for anexample.

Herein, the parameter unit 231 is configured to determine, from thesecond system information, a parameter for accessing the systemaccording to a type of the second communication node, and access thesystem according to the parameter.

The set unit 232 is configured to determine, from the second systeminformation, a set of access parameters for accessing the systemaccording to a type of the second communication node, and access thesystem according to the set of access parameters.

Optionally, the device according to the embodiment of the disclosure mayalso include a determining module 24.

The determining module 24 is configured to determine a transmissionperiod of the first system information according to a time interval atwhich the first system information is successfully received by the firstreceiving module 21.

The system information transmission method according to the embodimentsof the disclosure is elaborated below through some embodiments. A firstcommunication node in the following embodiments is, for example, a basestation, and a second communication node is, for example, a terminal.

First Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates whethersecond system information is sent on the carrier frequency f1. FIG. 6illustrates a schematic diagram of a relationship between the firstsystem information and the second system information in the method forsending system information according to an embodiment of the disclosure.Herein the first system information indicates that the second systeminformation is sent on the carrier frequency f1.

A terminal receives the first system information on the carrierfrequency f1, and receives, according to indication information of thefirst system information, the second system information from the basestation and/or other base stations on the carrier frequency f1.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Second Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates atransmission period of second system information, and the second systeminformation may be sent on either the carrier frequency f1 (asillustrated in FIG. 6 ) or other carrier frequencies. FIG. 7 illustratesa schematic diagram of a relationship between the first systeminformation and the second system information in the method for sendingsystem information according to an embodiment of the disclosure.

A terminal receives the first system information on the carrierfrequency f1, and receives, according to indication information of thefirst system information, the second system information from the basestation and/or other base stations on the carrier frequency f1.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Third Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates an updatesituation of second system information, and the second systeminformation may be sent on either the carrier frequency f1 or othercarrier frequencies. The update situation may be represented by Xbit(s). For example, when the X is one bit, the X is assumed as 0; whenthe second system information needs to be updated, the X becomes 1; whenthe system information is updated again, the X becomes 0, and so on.

Optionally, in the embodiment, first system information between updatedsecond system information and adjacent un-updated second systeminformation should be adjusted according to the updated second systeminformation. For example, when the X is one bit, the X is assumed as 0;when the second system information needs to be updated, the X in thefirst system information between the updated second system informationand the adjacent un-updated second system information becomes 1. Anadvantage of processing in such a manner is that the terminal which hasacquired the second system information knows in advance whether thefollow-up second system information is updated; if the follow-up secondsystem information is not updated, the terminal may not receive thefollow-up second system information; if the follow-up second systeminformation is updated, the terminal needs to receive the updated secondsystem information, thereby achieving the objective of saving electricalpower of the terminal.

Fourth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates one or morecarrier frequencies for sending second system information. For example,the second system information may be sent on either a carrier frequencyf2 (as illustrated in FIG. 7 ) or multiple carrier frequencies (e.g. thecarrier frequency f2 and a carrier frequency f3).

A terminal receives the first system information on the carrierfrequency f1, and receives, according to indication information of thefirst system information, the second system information from the basestation and/or the other base stations on the carrier frequency f2, orreceives, according to indication information of the first systeminformation, the second system information from the base station and/orthe other base stations on the carrier frequency f2 and the carrierfrequency f3.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Fifth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates time atwhich second system information is sent, and the second systeminformation may be sent on either the carrier frequency f1 or othercarrier frequencies.

The terminal receives the first system information on the carrierfrequency f1, and receives, according to indication information of thefirst system information, the second system information from the basestation and/or other base stations on the carrier frequency f1 or othercarrier frequencies.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Sixth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates afrequency-domain resource for sending second system information. Forexample, the frequency-domain resource used for the second systeminformation is greater than or equal to a frequency-domain resource usedfor the first system information.

A terminal receives the first system information on the carrierfrequency f1, and receives, according to the frequency-domain resourceindicated by the first system information, the second system informationsent by the base station and/or other base stations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Seventh Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates a durationrequired for one transmission of complete second system information, andthe second system information may be sent on either the carrierfrequency f1 or other carrier frequencies.

Optionally, in the embodiment, the duration of the complete secondsystem information is a duration of the second system information whenthe terminal may successfully acquire the second system informationunder an ideal channel condition (no interference, no noise and channelknown), and the duration may be either continuous in time or discrete intime. FIG. 8 illustrates a schematic diagram of a relationship betweenthe first system information and the second system information in themethod for sending system information according to an embodiment of thedisclosure. Herein the terminal may acquire the complete second systeminformation by successfully receiving a segment 1 and a segment 2discretely sent in time.

Eighth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates a dataformat of second system information. For example, the second systeminformation has Y data formats, and the first system informationindicates which data format the second system information belongs to.Optionally, in the embodiment, different data formats may be dividedbased on at least one of a bit length, a modulation and coding scheme, acombination of time-frequency resource occupation, a service type, acarrier frequency, or a protocol version.

A terminal receives the first system information on the carrierfrequency f1, and receives, according to indication information of thefirst system information, the second system information from the basestation and/or other base stations on the carrier frequency f1 or othercarrier frequencies.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Ninth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates afrequency-domain subcarrier spacing used for sending the second systeminformation, and the frequency-domain subcarrier spacing may be the sameas a frequency-domain subcarrier spacing used for sending the firstsystem, or may be different from a frequency-domain subcarrier spacingused for sending the first system information.

A terminal receives the first system information on the carrierfrequency f1, and receives, according to the frequency-domain subcarrierspacing indicated by the first system information, the second systeminformation sent by the base station and/or other base stations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Tenth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicates a waveformused for sending the second system information. Optionally, the waveformmay be either an orthogonal multiple access mode or a non-orthogonalmultiple access mode.

A terminal receives the first system information on the carrierfrequency f1, and receives, according to indication information of thefirst system information, the second system information sent by the basestation and/or other base stations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Eleventh Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. Herein, the first system information indicatescorrespondences between the first system information and second systeminformation. FIG. 9 illustrates a schematic diagram of a relationshipbetween the first system information and the second system informationin the method for sending system information according to an embodimentof the disclosure. The second system information includes Y sets ofaccess parameters, and the first system information indicates that Zsets of access parameters in the Y sets of access parameters may beapplied to the carrier frequency f1, herein the Z is greater than orequal to 1, and is less than Y.

A terminal receives the first system information on the carrierfrequency f1, and receives, according to indication information of thefirst system information, the second system information sent by the basestation and/or other base stations.

The terminal determines, from the Y sets of access parameters, a set ofaccess parameters for accessing the base station, and accesses the basestation according to the set of access parameters.

Twelfth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information on a carrierfrequency f1. FIG. 10 illustrates a schematic diagram of a relationshipbetween the first system information and the second system informationin the method for sending system information according to an embodimentof the disclosure. Herein the first system information includes atransmission period of the first system information.

A terminal receives the first system information on a carrier frequencyf1, and receives, according to indication information of the firstsystem information, second system information sent by the base stationand/or other base stations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

The advantage of the embodiment is to provide enough flexibility for theforward compatibility design of the system, thereby avoiding the problemof limitation to a follow-up design due to a fixed transmission periodof the first system information.

Thirteenth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information. Herein, the firstsystem information is indicative of indication information associatedwith second system information. Optionally, a transmission period of thefirst system information is less than a transmission period of thesecond system information.

A terminal receives the first system information, and receives,according to the indication information of the first system information,the second system information sent by the base station and/or other basestations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Fourteenth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information. Herein, the firstsystem information indicates a type of second system information.Optionally, the base station informs, through the first systeminformation, a terminal of the type of the second system information ortypes of corresponding second system information on different carrierfrequencies.

The terminal receives the first system information, and receives,according to indication information of the first system information, thesecond system information sent by the base station and/or other basestations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Fifteenth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information. Herein, the firstsystem information indicates a type of second system information.Optionally, FIG. 11 is a schematic diagram of a relationship between thefirst system information and the second system information in the methodfor sending system information according to an embodiment of thedisclosure. The base station informs, through the first systeminformation, a terminal of the type of the second system information ortypes of corresponding second system information on different carrierfrequencies.

The terminal which has received the first system information selects,according to a type of the terminal, the second system informationapplicable to the terminal. For example, there are three types of thesecond system information, which correspond to three types of servicesrespectively, and the terminal receives corresponding second systeminformation according to a service type of the terminal itself. Forexample, there are three types of the second system information, whichcorrespond to three types of terminal respectively, and the terminalreceives corresponding second system information according to a terminaltype of the terminal.

Sixteenth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information. Herein, the firstsystem information is indicative of indication information associatedwith second system information. Optionally, the second systeminformation includes a transmission period of the second systeminformation. For example, a value of the transmission period may be aset defined in a standard.

A terminal receives the first system information, and receives,according to the indication information of the first system information,the second system information sent by the base station and/or other basestations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Seventeenth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information. Herein, the firstsystem information is indicative of indication information associatedwith second system information. Optionally, the second systeminformation includes a transmission period of the first systeminformation on X carrier frequencies. Herein, the X is an integergreater than 1. For example, the value of the transmission period may bea set defined in the standard.

A terminal receives the first system information, and receives,according to the indication information of the first system information,the second system information sent by the base station and/or other basestations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Eighteenth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information. Herein, the firstsystem information is indicative of indication information associatedwith second system information. Optionally, FIG. 12 illustrates aschematic diagram of a relationship between the first system informationand the second system information in the method for sending systeminformation according to an embodiment of the disclosure. The secondsystem information includes information of N sets of access parameters,here the N is an integer greater than or equal to 1.

A terminal receives the first system information, and receives,according to the indication information of the first system information,the second system information sent by the base station and/or other basestations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Nineteenth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information. Herein, the firstsystem information is indicative of indication information associatedwith second system information. Optionally, the second systeminformation includes information of N sets of access parameters, herethe N is an integer greater than or equal to 1.

The terminal which has received the second system information selects,according to a type of the terminal, a set of access parametersapplicable to the terminal.

Twentieth Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information. Herein, the firstsystem information is indicative of indication information associatedwith second system information. Optionally, the second systeminformation includes carrier frequency information used for sending thesecond system information. For example, FIG. 13 illustrates a schematicdiagram of a relationship between the first system information and thesecond system information in the method for sending system informationaccording to an embodiment of the disclosure. The base station informs,through the first system information, a terminal that the second systeminformation may be used on carrier frequencies f1, f2 and f3, or informsa terminal that the second system information is prohibited from beingused on carrier frequencies f4 and f5.

A terminal receives the first system information on the carrierfrequencies f1, f2 and f3, and receives, according to the indicationinformation of the first system information, the second systeminformation sent by the base station and/or other base stations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Twenty-First Embodiment

As illustrated in FIG. 1 , a base station generates first systeminformation.

The base station sends the first system information. Herein, the firstsystem information is indicative of indication information associatedwith second system information. Optionally, a transmission period of thefirst system information is configurable, and a terminal may determine,through a blind detection manner, the transmission period of the firstsystem information or a transmission period of the second systeminformation.

A terminal receives the first system information, and receives,according to the indication information of the first system information,the second system information sent by the base station and/or other basestations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Twenty-Second Embodiment

A base station generates first system information.

The base station sends the first system information. Herein, the firstsystem information is indicative of indication information associatedwith second system information. Optionally, the number of useful databits of the second system information is greater than the number ofuseful data bits of the first system information.

A terminal receives the first system information, and receives,according to the indication information of the first system information,the second system information sent by the base station and/or other basestations.

The terminal accesses the base station or other base stations in awireless communication system according to the second systeminformation.

Twenty-Third Embodiment

A terminal knows that there are N possible transmission periods of thefirst system information (e.g. it is determined by a standardized waythat there are four possible transmission periods of the first systeminformation including 1 ms, 2 ms, 5 ms and 10 ms), and the terminaldetermines a transmission period of the first system informationaccording to a time interval at which the first system information issuccessfully received.

It should be noted that a communication node for sending first systeminformation may be different from a communication node for sendingsecond system information. For example, in a heterogeneous network, amacro base station sends the second system information, and a micro basestation only sends the first system information; or a macro base stationsends the first system information and the second system information, amicro base station sends the first system information, and the firstsystem information sent by the different base stations may be different.

The first system information may be a synchronization signal, thesynchronization signal carries different information combinationsaccording to different synchronization sequences and/or resource mappingmanners; or the first system information may also be a reference signal,the reference signal carries different information combinationsaccording to different sequences and/or resource mapping manners. Thefirst system information may be sent to a terminal through a downlinkchannel of at least one of a 5G system, a LTE system, a WCDMA system, aGSM system, or a system adopting the standard 802.11. The second systeminformation may be sent to a terminal through a downlink channel of atleast one of a 5G system, a LTE system, a WCDMA system, a GSM system, ora system adopting the standard 802.11.

Although the implementations according to the embodiments of thedisclosure are as described above, contents disclosed in the embodimentsare the implementations only adopted for facilitating understanding thetechnical solutions according to the embodiments of the disclosure, andnot intended to limit the embodiments of the disclosure. Any skilled inthe art may make any modification and change to forms and details of theembodiments without departing from the core technical solution disclosedby the embodiments of the disclosure, but the scope of protectionlimited by the disclosure is still subject to the scope limited by theclaims attached.

Those of ordinary skill in the art may understand that all or a part ofoperations of the above embodiments may be performed by a flow ofcomputer program. The computer program can be stored in acomputer-readable storage medium, and is executed on correspondinghardware platforms (such as a system, equipment, an apparatus, and adevice). When being executed, the computer program includes one or acombination of the operations in the embodiments of the method.

Optionally, all or a part of operations of the above embodiments mayalso be implemented by an integrated circuit. These operations may bemade into integrated circuit modules separately; or multiple modules oroperations of the above embodiments are made into a single integratedcircuit module.

The apparatus/function module/function unit in the above embodiments maybe realized by a general computing device. The apparatus/functionmodule/function unit can be either integrated on a single computingdevice, or distributed on a network constituted by multiple computingdevices.

When the apparatus/function module/function unit in the aboveembodiments are realized in form of software function module and sold orused as an independent product, the apparatus/function module/functionunit can be stored in a computer-readable storage medium. The abovementioned computer-readable storage medium may be a read-only memory(ROM), a magnetic disk or a compact disk.

INDUSTRIAL APPLICABILITY

Through the embodiments of the disclosure, a first communication nodegenerates first system information, and sends the first systeminformation to a second communication node; after receiving the firstsystem information, the second communication node receives second systeminformation according to indication information of the first systeminformation; and the second communication node accesses a systemaccording to the second system information. The technical solutionsaccording to the disclosure may reduce a system broadcast controloverhead to flexibly adapt to the requirements on different services inthe 5G, and meet “forward compatibility” of a system design, therebyhaving good adaptability to different services.

What is claimed is:
 1. A method for wireless communication, comprising:transmitting, by a base station providing access to a cell, a masterinformation block on a broadcast channel to a terminal device, themaster information block carrying an indication informationcorresponding to a system information block, wherein the indicationinformation includes a frequency-domain subcarrier spacing fortransmitting the system information block on a downlink shared channelto the terminal device; and assisting, by the base station, the terminaldevice to access the cell provided by the base station using the systeminformation block by transmitting the system information block to theterminal device according to the frequency-domain subcarrier spacingincluded in the master information block, wherein the system informationblock includes a transmission period of the master information block ona carrier frequency, and wherein a number of data bits of the systeminformation block is greater than a number of data bits of the masterinformation block.
 2. The method of claim 1, wherein the transmissionperiod of the master information block is 5 ms or 10 ms.
 3. The methodof claim 1, wherein the master information block on the broadcastchannel comprises information about a reference signal associated with aresource mapping manner.
 4. The method of claim 1, wherein thetransmission period of the master information block is less than atransmission period of the system information block.
 5. The method ofclaim 1, wherein the system information block comprises at least one of:information of one or more sets of access parameters, or communicationcarrier frequency information of the system information block.
 6. Amethod for wireless communication, comprising: receiving, by a terminaldevice from a base station providing access to a cell on a broadcastchannel, a master information block carrying an indication informationcorresponding to a system information block, wherein the indicationinformation includes a frequency-domain subcarrier spacing for receivingthe system information block on a downlink shared channel from the basestation; receiving, by the terminal device, the system information blockaccording to the frequency-domain subcarrier spacing; and accessing thecell provided by the base station according to the system informationblock; wherein the system information block includes a transmissionperiod of the master information block on a carrier frequency, andwherein a number of data bits of the system information block is greaterthan a number of data bits of the master information block.
 7. Themethod of claim 6, wherein the transmission period of the masterinformation block is 5 ms or 10 ms.
 8. The method of claim 6, whereinthe master information block on the broadcast channel comprisesinformation about a reference signal associated with a resource mappingmanner.
 9. The method of claim 6, wherein the transmission period of themaster information block is less than a transmission period of thesystem information block.
 10. The method of claim 6, wherein the systeminformation block comprises at least one of: information of one or moresets of access parameters, or communication carrier frequencyinformation of the system information block.
 11. A device for providingaccess to a cell for wireless communication, comprising a processor thatis configured to: transmit a first system information on a broadcastchannel to a terminal device, a master information block carrying anindication information corresponding to a system information block,wherein the indication information includes a frequency-domainsubcarrier spacing for transmitting the system information block on adownlink shared channel to the terminal device; and assist the terminaldevice to access the cell using the system information block bytransmitting the system information block to the terminal deviceaccording to the frequency-domain subcarrier spacing included in themaster information block, wherein the system information block includesa transmission period of the master information block on a carrierfrequency, and wherein a number of data bits of the system informationblock is greater than a number of data bits of the master informationblock.
 12. The device of claim 11, wherein the transmission period ofthe master information block is 5 ms or 10 ms.
 13. The device of claim11, wherein the master information block on the broadcast channelcomprises information about a reference signal associated with aresource mapping manner.
 14. The device of claim 11, wherein thetransmission period of the master information block is less than atransmission period of the system information block.
 15. The device ofclaim 11, wherein the system information block comprises at least oneof: information of one or more sets of access parameters, orcommunication carrier frequency information of the system informationblock.
 16. A device for wireless communication, comprising a processorthat is configured to: receive, on a broadcast channel, from a basestation providing access to a cell, a master information block carryingan indication information corresponding to a system information block,wherein the indication information includes a frequency-domainsubcarrier spacing for receiving the system information block on adownlink shared channel from the base station; receive the systeminformation block according to the frequency-domain subcarrier spacing;and access the cell provided by the base station according to the systeminformation block; wherein the system information block includes atransmission period of the master information block on a carrierfrequency, and wherein a number of data bits of the system informationblock is greater than a number of data bits of the master informationblock.
 17. The device of claim 16, wherein the transmission period ofthe master information block is 5 ms or 10 ms.
 18. The device of claim16, wherein the master information block on the broadcast channelcomprises information about a reference signal associated with aresource mapping manner.
 19. The device of claim 16, wherein thetransmission period of the master information block is less than atransmission period of the system information block.
 20. The device ofclaim 16, wherein the system information block comprises at least oneof: information of one or more sets of access parameters, orcommunication carrier frequency information of the system informationblock.